I have used a Solano, and it's still going after 10+ years. That said, my model isn't up to date with some of the newer features, and I'm looking to replace it, but not loyal enough to the brand to buy a more updated version. At present, I'm considering the second one down on this page, the TGR, which I hear is the same as the vaunted but overpriced Harry Josh dryer, just not as pretty: http://www.internetbeautysuppl.....owers.html. (Well, it used to be $100 cheaper: I just noticed the Josh is on 'limited time offer' for the same price, probably since word got out about this one). I haven't pulled the plug yet because it is expensive.
From what I've read, yes some cheaper dryers do fry hair so in certain cases pricier models may be better. But many expensive dryers --like the Josh--seem overpriced. That's why I haven't committed to a new one. My stylist sells an over the top expensive Swiss model but told me that any dryer will work on my hair as long as it's used on a cool setting. However, he says some people need better care because of the type of hair they have and what they are trying to achieve (straightening very curly hair, etc.).
Thanks for this question, Aquamarine, I'm watching with interest to see what others advise.
ETA, I just looked at my Solano to get the model number, and the dryer's so old and much used, that it's worn off. Maybe that answers your question.